class_docstr: Rule class to handle processing
code: def description(self):
      return self._description or self.DEFAULT_RULE_DESCRIPTION
  
imports: import ast
  from copy import deepcopy
  import hashlib
  import inspect
  import json
  from streamalert.shared.logger import get_logger
label_desc: Use image node_id 9 for calling the Rule obj's underlying member method code with example usage: obj.description() and returns: unknown